android.text.method
Class NumberKeyListener

java.lang.Object
  android.text.method.MetaKeyKeyListener
      android.text.method.BaseKeyListener
          android.text.method.NumberKeyListener

All Implemented Interfaces:

InputFilter, KeyListener

Direct Known Subclasses:

DateKeyListener, DateTimeKeyListener, DialerKeyListener, DigitsKeyListener, TimeKeyListener

public abstract class NumberKeyListener
extends BaseKeyListener
implements InputFilter

For numeric text entry

Nested Class Summary

Nested classes/interfaces inherited from interface android.text.InputFilter

InputFilter.AllCaps, InputFilter.LengthFilter

Field Summary

Fields inherited from class android.text.method.BaseKeyListener

OLD_SEL_START

Fields inherited from class android.text.method.MetaKeyKeyListener

META_ALT_LOCKED, META_ALT_ON, META_CAP_LOCKED, META_SHIFT_ON, META_SYM_LOCKED, META_SYM_ON

Constructor Summary

NumberKeyListener()

Method Summary

CharSequence	filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) This method is called when the buffer is going to replace the range dstart … dend of dest with the new text from the range start … end of source.
protected abstract char[]	getAcceptedChars() You can say which characters you can accept.
protected int	lookup(KeyEvent event, Spannable content)
protected static boolean	ok(char[] accept, char c)
boolean	onKeyDown(View view, Editable content, int keyCode, KeyEvent event) Handles presses of the meta keys.

Methods inherited from class android.text.method.BaseKeyListener

backspace

Methods inherited from class android.text.method.MetaKeyKeyListener

adjustMetaAfterKeypress, getMetaState, getMetaState, isMetaTracker, onKeyUp, resetLockedMeta, resetMetaState

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface android.text.method.KeyListener

onKeyUp

Constructor Detail

NumberKeyListener

public NumberKeyListener()

Method Detail

getAcceptedChars

protected abstract char[] getAcceptedChars()

You can say which characters you can accept.

lookup

protected int lookup(KeyEvent event,
                     Spannable content)

filter

public CharSequence filter(CharSequence source,
                           int start,
                           int end,
                           Spanned dest,
                           int dstart,
                           int dend)

Description copied from interface: InputFilter

This method is called when the buffer is going to replace the range dstart … dend of dest with the new text from the range start … end of source. Return the CharSequence that you would like to have placed there instead, including an empty string if appropriate, or null to accept the original replacement. Be careful to not to reject 0-length replacements, as this is what happens when you delete text. Also beware that you should not attempt to make any changes to dest from this method; you may only examine it for context.

Specified by:

filter in interface InputFilter

ok

protected static boolean ok(char[] accept,
                            char c)

onKeyDown

public boolean onKeyDown(View view,
                         Editable content,
                         int keyCode,
                         KeyEvent event)

Description copied from class: MetaKeyKeyListener

Handles presses of the meta keys.

Specified by:

onKeyDown in interface KeyListener

Overrides:

onKeyDown in class BaseKeyListener